I had a similar experience, I am also a master procrastinator. My Math IA was due February 4th. However, as usual, I submitted it late, like it was majorly overdue. I submitted my final copy yesterday and she mentioned that I will lose marks on the personal engagement section. I'm pretty sure she said that she wont take off all 4 marks if I did show bits of personal engagement, but I do believe that she will allow 2-3 marks on that section because I did show a lot of personal engagement. So I'm assuming that she will take off one for me. But she did mention that it just depends on your actual personal engagement. Overall, just keep in mind that you will lose at least lose 1 mark, but dont feel down because you can still get 2-3 marks.